How Justice is Defined

Muslihoon:

Islam believes in “prescribed punishments,” often called (حدود, Hudūd, literally “limits”). This means that for certain crimes, there are certain punishments. Muslims are obligated to follow the rules concerning such punishments. They cannot be overruled, set aside, changed, or otherwise avoided. To do so would be to go against God’s revelations. So Muslims do not have the luxury, as it were, to become lenient like Jews were and as Western civilization is now. (Adultery, fornication, and so on, aren’t even crimes, let alone punished.) And so Muslims are stuck with such backwards, primitive, and barbaric punishments.

Update
Black Lion provides the perfect example:

Saying things like ‘Islam needs to be reformed’ is a statement of kufr, requiring one to take shahada again.

Ditto for ruling by other than what Allah has revealed, or even calling for any of what he has revealed to be removed. An example would be calling for any of His hudood punishments to be removed categorically. Not applying a penalty in specific cases of doubt as to guilt or the Islamic applicability of the penalty is fine, as in the case of not executing the Afghan convert who was testified to be insane and hear voices.

Interesting. The Afghani apostate shouldn't be killed not because killing an apostate is wrong but because he might be insane.

Read it all. The "war is deception" bit is also illuminating.